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CVE-2019-11704
CRITICAL
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.
Published: Jul 23, 2019
Modified: Jun 17, 2026
CWE-787
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (1)
| Vendor | Product | Version |
|---|---|---|
| mozilla | thunderbird | * < 60.7.1 |
GitHub Security Advisory GHSA-7hpm-8887-xq76
A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in...
References (6)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553814 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201908-20 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-17/ Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1553814 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/201908-20 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-17/ Vendor Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
10.53%
Top 5% most likely to be exploited
Threat Score
42.4 / 100
Data Sources
NVD
EPSS
GitHub